Bernie Zurella, a former World Kickboxing Association fighter and Army drill sergeant. He used that butt-kicking background to design these creative exercises for his wait-listed class Butt and Gutt (extra t because it's extra effective) at Gold's Gym in Long Branch, New Jersey. Now you get the exclusive.You'll need: A stability ball. Dust 'er off!
Your plan: Combine these moves with this stability ball butt . . .